Question: Which are the moons of the parent astronomical body of Pluto?
Paraphrase: The parent astronomical body Pluto has which moons?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P397 wd:Q339 . ?sbj wdt:P31 wd:Q184246 } 
Answer: Nix, Hydra, Kerberos, Styx, Charon